Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 01-12-2021 and time 03:20:33 (Italy) in region Costa Ionica Catanzarese (Catanzaro)

A magnitude ML 1.3 earthquake occured in region: Costa Ionica Catanzarese (Catanzaro), on

  • 01-12-2021 02:20:33 (UTC)
  • 01-12-2021 03:20:33 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 38.8090, 16.6210 at 16 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Stalettì CZ 8 2433 2433
Squillace CZ 9 3608 6041
San Floro CZ 9 716 6757
Borgia CZ 10 7611 14368
Catanzaro CZ 11 90612 104980
Montauro CZ 12 1732 106712
Gasperina CZ 12 2160 108872
Vallefiorita CZ 14 1771 110643
Caraffa di Catanzaro CZ 14 1866 112509
Montepaone CZ 14 5282 117791
Soverato CZ 15 9204 126995
Amaroni CZ 15 1855 128850
Settingiano CZ 15 3124 131974
Sellia Marina CZ 15 7513 139487
Palermiti CZ 16 1213 140700
Soveria Simeri CZ 16 1564 142264
Simeri Crichi CZ 17 4698 146962
Girifalco CZ 17 5945 152907
Petrizzi CZ 17 1131 154038
Marcellinara CZ 17 2285 156323
Tiriolo CZ 18 3870 160193
Cortale CZ 19 2117 162310
Centrache CZ 19 401 162711
Sellia CZ 19 530 163241
Olivadi CZ 20 529 163770
Satriano CZ 20 3448 167218
Gagliato CZ 20 505 167723
Pentone CZ 20 2113 169836

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km S of Catanzaro (90612 inhabitants)
32 Km SE of Lamezia Terme (70714 inhabitants)
53 Km SW of Crotone (62178 inhabitants)
63 Km SE of Cosenza (67546 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.3 2021-12-01
02:20:33		 38.8087 16.6213 16 2022-03-30
13:04:34		 Bollettino Sismico Italiano INGV 100558091
Reviewed
Rev100 		ML 1.3 2021-12-01
02:20:33		 38.8157 16.6115 18 2021-12-01
02:26:55		 Sala Sismica INGV-Roma 97993451
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-01 02:20:33 ± 0.1
Latitude 38.8087 ± 0.0054
Longitude 16.6213 ± 0.0104
Depth (km) 16 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 100558091

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 875
Semi-minor axis of confidence ellipse (meter) 450
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 106
Circular confidence region, given by single value of horizontal uncertainty (meter) 870.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 186
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.15738
Epicentral distance of station farthest from the epicenter (degree) 0.54679
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 97993451
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-01 02:26:55

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 100558091
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-02-11 14:02:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PLAC.HHZ. 2021-12-01T02:20:47.94 0.3 undecidable manual S 202 42.9237 100 0.3 68
MN.TIP.HHZ. 2021-12-01T02:20:47.59 0.3 undecidable manual S 16 42.8238 100 -0.02 72
IV.GIZZ.HHZ. 2021-12-01T02:20:46.80 0.6 undecidable manual S 298 40.4262 100 -0.19 46
IV.SPS2.HHZ. 2021-12-01T02:20:45.23 0.6 undecidable manual P 336 58.7967 96 1.09 33
IV.CAR1.HNZ. 2021-12-01T02:20:44.43 0.3 undecidable manual P 325 60.6948 96 0 70
IV.FERC.HHZ.00 2021-12-01T02:20:44.08 0.3 undecidable manual P 227 58.1973 96 0.03 70
IV.SERS.HHZ. 2021-12-01T02:20:43.33 0.3 undecidable manual S 13 25.8519 110 0.11 72
IV.SELL.HHZ. 2021-12-01T02:20:41.66 0.3 undecidable manual S 2 19.3695 119 0.03 74
MN.TIP.HHZ. 2021-12-01T02:20:41.39 0.1 undecidable manual P 16 42.8238 100 -0.3 90
IV.PLAC.HHZ. 2021-12-01T02:20:41.62 0.1 undecidable manual P 202 42.9237 100 -0.09 94
IV.GRI.EHZ. 2021-12-01T02:20:41.08 0.3 undecidable manual S 275 17.4714 122 -0.12 73
IV.GIZZ.HHZ. 2021-12-01T02:20:41.38 0.3 undecidable manual P 298 40.4262 100 0.04 72
IV.SERS.HHZ. 2021-12-01T02:20:39.07 0.1 undecidable manual P 13 25.8519 110 -0.09 97
IV.SELL.HHZ. 2021-12-01T02:20:38.23 0.1 undecidable manual P 2 19.3695 119 -0.01 100
IV.GRI.EHZ. 2021-12-01T02:20:37.92 0.1 undecidable manual P 275 17.4714 122 -0.08 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SELL.HHE. ML:0.9 0.000053687505 0.28 AML other m 2021-12-01T02:20:42.12
IV.GRI.EHN. ML:1.6 0.0002889679 0.36 AML other m 2021-12-01T02:20:42.03
IV.SELL.HNN. ML:1.5 0.00020639895 0.44 AML other m 2021-12-01T02:20:42.57
IV.GRI.EHE. ML:1.3 0.00015209115 0.2208 AML other m 2021-12-01T02:20:42.29
IV.SELL.HNE. ML:1.4 0.00016829850000000003 0.1392 AML other m 2021-12-01T02:20:42.55
IV.SELL.HHN. ML:1.0 0.000059579060000000004 1.76 AML other m 2021-12-01T02:20:43.91
IV.SERS.HHE. ML:1.1 0.00006444829000000001 0.3408 AML other m 2021-12-01T02:20:43.48
IV.SERS.HNE. ML:1.5 0.0001724288 0.28 AML other m 2021-12-01T02:20:43.43
IV.SERS.HHN. ML:1.6 0.000179 0.28 AML other m 2021-12-01T02:20:43.57
IV.SERS.HNN. ML:1.1 0.00006399762000000001 0.4 AML other m 2021-12-01T02:20:43.50
IV.PLAC.HHN. ML:1.1 0.00003735778 0.24 AML other m 2021-12-01T02:20:48.84
MN.TIP.HHN. ML:0.8 0.000020541375 0.3616 AML other m 2021-12-01T02:20:49.00
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download